1) On foot at Streatham Common station half way down platform 1, point of view drops to appear that you have sunk up to nose level INTO the platform. It clears if you cross lines over to platform 2. 2) Between Hassocks and Preston Park around Clayton and Patcham tunnels train external view switches to display a view from under the rails. It clears when you switch back to cab view but can reoccur when you return to external camera.
